Mechanical movement.



J. W. PITTS.

MECHANICAL MOVEMENT.

APPLIOAT 11111111111111111 1.

INVENTOR L/a/r/v/f/ /rri,

J. W. PITTS.

MECHANICAL MOVEMENT.

APPLICATION FILED MAY 15, 1911.

1,056,746, Patehted Mar. 18,1913.

3 SHEETS-SHEET 2.

l/WE/VTOR Jamv M E7715,

ATTORNEYS J. W. PITTS.

MECHANICAL MOVEMENT.

APPLICATION FILED MAY 15, 1911 1,056,746. Patented Mar. 18, 1913.

3 SHEETSBHEET 3.

WITIVILSHS'ES' ATTORNEYS Original application fi led Marat 1, 1911, swarm.

, To all whom it ma concern:

citizen of the United Movements,

be converted into a UNITED STATES PA NT oFFIoE;

mm W. rrrrs, or memes,

anrzonaussrcmon' .ro rn'rs ROYALTY comm. or

BIBIBEE, ARIZONA, A oonronarron or-smears:

. mpcnnmcnr. movsusn'nt An object of my'invention is to provide. a'

device whereby .a' reciprocatory motion may rotary motion or vice versa. i V A- further object of mypinventizon 1s to provide a mechanical movement of the kind specified in which there is less lossof power in 'the conversion of one motion into the other and in the ordinary mechanical movements; I I

. Other objects and advantages will'appear in the following specification and the novel features of thedevice will be particularly pointed out in the appended claims.

My invention is illustrated in the accomk panying drawings forming part of this application in whi ch Figure 1 isa v chanical movement, Fig. 2 is a side-vlew of the eccentric, Fig. 3 is a section through the f eccentric on the line 3-3 of Fig. 2, Figs. 4, 4

centric, '10

-1 and 4 are diagrammatic views showing the relative ositions of the eccentric when a" mechanical movement is" connected with the piston of a reciprocating engine, Fig. 5 is a side view of a modified form of ccof Fig. .5, Fig. 7 is a diagrammatic vieW showing the employment of the modified form-of the mechanical movement shown in Figs. '5 and 6 with a plurality of engines, Fig 8 is a detail sectional View showing another modification of the mechanical movement, Fig. 9 is a side-view of the mechanism shown in- Fig. 8, Fig. 10 is a detail view showing a further modified form, and Fig. 11 is a sectionalview along the line 11-11 of'FiglO, looking in the direction of the arrov7.

The mechanism disclosed in the present application has been set forth in a prior application, Serial Number,.e11,551, filed- Speciflcation of Letters Patent.

tates, and a resident r v therethrou h.: T

perspective view of the me-- Fig. 6 is a section along the line 6-6.

611,551. Divided March 1,1911. The present case is a divis1onalapplicationi The mechanismwhich of this invention isbest entirety in Fig.--1.- I assemblage of the parts,

illustrated in its however; ex-

when combined Referring now particularly to Fi itwill be seen that I haVe rovi ed a body portion 1 havin a cyli'nd rical opening 2 is bodyportion terminates atjeach en in a gear, one of thse'gears being. shownat 3 and theotheratt. The body 'portion l-has anintgral arc-shaped ortion -5 having side flanges Gfora purpose ere'incomprise the movement.

the center of thef'arc-shaped portion is at the point 7, which is on a. common tangent with the gears 3 mild. Arranged to mesh with the gears 3 and 4 are the internal gears position. In 'ig. 1 I'have shown a portion of an engine frame 10 having a bolt arranged to pass into the tongue 9 of the gear 9 is stationary, and not movable. It will be understood that similar-means or any suitable'means may be applied to thegears stationary positions. The gear 3, as stated, ,meshes with the internal gear 8 'and the gear- 4 is designed to mesh with the "internal gear 9. The shaft 11 extend throughthe opening 2 and the gears 3 and .4 are ther'efore loosely mounted on the shaft. The end of this shaft 11 at one end is fastenedby means ,1). This crank member is enlarged at the opposite end to form an arc-shaped counterwelght 14. A shaft 15 having a reduced member, as shown in Fig.1.. A'similar an shaft being secured to the crank'mem'ber 13 similar to the crank member 13 and being provided with a counterweight 18 similar to the counterweight 14. A counterweight 19 the gears 8 and 9 adjacent I .a similar weight 20 shown in dotted lines :is attached to one side of the gear 3 adjacent the stationary gear 8.

forms the subj ect Before takin .u the I fwill' plan the constructlon ofthe element's'lwhich 'after explained. ltwill be observed that gear 9, merely. toillustrate thefact that the 8 or 9 for the purpose of holding them in of a key 12 to a crank member 13'(se'e Fig.

portion ltj has its end secured to the crank Patented Mar. 18.1913." 1 and this application filed my 15, 1911. Serial no. cameo; I

.2a'nd a,

E8 and 9 respectively. {Bothj otthe gears 8 l and 9 are designed to be held ina stationary :rangement is provided-for the shaft 17, this is attached to one side of the gear 4: between] the gear 9,whilethe .center of the gear, 2

L P on one side and l" g 1, I have shown tWOPlSlLOIl rods on each side,

,on the other side.

Arranged to encircle the arc-shaped member is a strap 21 which is held together at its top by means of a bolt 22. This strap tits in between the flanges 6 and the strap andthe arc-shaped member 5 having a movement relative to one another. The strap 21 is rigidly attached to the piston rod on the other. In Fig.

one'piston rod 1 and a smaller piston rod 77 on one side and the piston rods I" and 7) These rods are rigidly attached to the strap as stated, and as far as the mechanical movement is concerned might be a single rod instead of two.

From the foregoing description of the various parts of the device the operation thereof may be readily understood. Consider the diagrammatic illustration in Fig. 4. In this figure the piston rod .1 is connected to a piston P in a cylinder C. The plston rod is connected with the strap 21 on the member 5. Since the gears 3 and 4 operate precisely in the same manner it is sufficient to show the action of one of these gears. Thus in Fig. 4, the gear 3 is in mesh with a stationary internal gear 8. A movement of the piston P into the position shown in Fig. 4 will cause the gear 3 to revolve in the direction shown by the small. arrow, while e., the center of the shaft 11 will revolvein the opposite direction as shown by the large arrow. In other words, where the gear 8 is stationary the movement of the small gear 3 around on the interior of the gear 8 will cause the shaft 11 to revolve about the center of the 40 Fig.

,, such straps as large internal gear 8, and will hence cause the revolution of the shafts 15 and 17. In a I have shown diiferent positions of the piston Pand of the strap 21. It will be seen that the strapfis-moved on a line parallel with the piston rod,. While the gear 38 is traveling around the interior of the stationary gear 8, and thereby causing the rotation'of the crank shafts 15 and 17.

The peculiar mechanical, movement by which the reciprocatory movement of a piston rod is changed into rotary movement enables me to make use of a number of engines the combined force of which may be used to cause rotary movement. without any danger of the engines working against one another. In Figs. 5 and 6, I have shown a device by which any number of engines,

from one to four, such as those shown in .Fig. 7, may be coupled up together. In

Fig. 5, it will. be seen that there are two members similar to 5, i. 6., 5- and 5 which are provided at 180 apart. Obviously two 21 should be provided. In Fig. -7 there are four cylinders A, B, A and B. The piston of the cylinder A is at the rear end of its stroke, and its strap 21 is therefore as near the cylinder A as it can be. The pistonsof the cylinder B is also attached to the strap 21 and the center of the strap, which,-as stated, is at the rear of the gear 3, moves on a straight line between the two pistons parallel to their axes. Now any other point on the circumference of, the gear 3 will move back-and forth in a straight line across'the circle formed by theinternal gear 8. The point 7" on the opposite side of the gear 3 from the point 7 will move in a straight line at right angles to the path of the point 7, and if this point 7 x be made the center of anotherarc-shaped member 5 then a strap attached to the member 5 may be operated by the pistons in the cylinders A and B to aid in turning a common crank shaft 15". It will be seen that any number of cylinders maybe used by providing extra straps and arc-shaped supports therefor which are attached to and integral with the gears 3 and 4.

In Figs. 8 and 9, I- have shdwn a modified form of mechanical movement in which the power may be applied either at the reciprocating end or at the rotating. end. In these figures M and M represent a pair of internal gears similar to the gears S and 9 already described. These gears like the gears 8 and 9 are designed to be held stationary. The teeth of the gears are arranged to mesh with the teeth of the traveling gears F and F a side view of the latter being shown in Fig. 9. The gear F is pivotally mounted on a crank shaft H upon which is also pivotally mounted a heavy wheel G The companion traveling gear F is likewise mounted on a crank shaft H, and has a weighted wheel G which is also pivotally mounted on the shaft. The weighted wheels G and G are joined by means of a shaft N and the parts Gr N and G form a crank member for the connecting rods U and U. In this case, as in the case of the mechanical movement shown in Fig. 1, already described, when power is applied through the crank shafts H and H, the gears will be caused to travel around on the inner side of the internal gear, but the shaft M will move directly across from one side of the internal gear to the other on a diametrical line, thereby causing the reciprocation of the rods U andU. The latter may be attached to any machine such as a pump (not shown) so as to drive it. The power maybe applied to the rods U and U, as for instance by means .of a wind mill (not shown) or by oppositely disposed engines such as that shown in Fig. 7. In the latter case, the cranks H and H will then be caused to revolve.

In Figs. 10 and 11 I have shown a still further modified form in which the reciprocating rods are connected at two differentpoints. An inspection of Figs. 10 and 11 will show that the arrangement of the parts is mainly the same except that the shaft N is connected with a similar shaft N by means of a bar Z. Instead of having only one set of reciprocating rods there are two sets, to wit: U and U"- U The effeet of this combinationris-to give a reciprocatory movement to each of the rods when moved at right angles to each other, Thus the rods IT -U move in a horizontal plane, while the rods U"U movein' a Vertical plane, the power being applied through the cranks H and H.

' ranged to be engaged by said traveling gear.

"circular strap said circular strap.

central 2. In a mechanical movement, a crankshaft having a U-shaped central portion, a weight carried by the crank shaft on the opposite sidethereof from'the 'U-shaped central portion, a traveling gear pivot-ally mounted on saidcentral portion of the crank shaft, a circular member integral with said gear and eccentric with respect thereto, a

member carried by said eccentric member and having a rotary movement relative thereto, and a stationary in ternal gear arranged to be engaged by said traveling gear.

3. In a mechanical movement, a pair of stationary internal gears, a crank shaft disposed centrally of said internal gears, 21 pair of integral traveling gears rotatably mounted on the center of said crankshaft and adapted to engage their respective internal gears, an integral circular member disposed between said traveling gears and being provided with side flanges, and a circular strap carried by said circular member between said side flanges and having a relative movement in respect to said circular member. 4. In a mechanical movement, a crank shaft, a grooved eccentricmounted for rotation on said crank shaft, a pair ofgears mounted on said crank shaft and bein con-v nected with said eccentric, a pair 0 stationary internal gears arranged to mesh with the first mentioned gears, a circular strap member disposed in the groove in sa1d eccentric, and piston rods for reciprocating 5. In a mechanical movement, a. crank shaft having a U-shaped central ortion, a traveling gear pivotally mounted on said ortion of the crank shaft, a circular mem er integral with said gear and 00- member having peripheral side flanges, a circular strap member carried by said eccentric member between said side flanges and having a rotary movement relative to said eccentric member, and a stationary internal gear arranged to mesh with said traveling gear, disposed within the U-shaped portion of said crank shaft.

shaft having a U-shaped centralportion, a pair of traveling gears rigidly connected ,together and pivot-ally mounted on the central 'portion of said crank shaft, a circular member integral with said gears and disposed between them, said circular member being eccentric of said gears, a circular strap member carried by said eccentric member and having a rotary movement relative thereto,,and a stationary individual internal posed within the U-shaped portion of said crank shaft.

pair of traveling gears rigidly'connected together and pivotally mounted on the central ortion of said crank shaft, a circular member integral with said-gears and disposed between them, said circular member being eccentric of said gears, a circular strap member carried by said eccentric member and having a rotary movement relative thereto, a stationary individual internal gear for each. of said traveling gears disposed within the U-shaped portion of said crank shaft, and counterweights secured to said crank shaft on the opposite side from said central portion. r i

8. In a mechanical movement, a crank shaft having a U-shaped central portion, a pair of traveling ears rigidly connected together and pivota 1y mounted on the. central portion of said crank shaft, a circular member integral with said gears and disposed between them, said circular member being eccentric 'of said gears, a circular strap member carriedby said eccentric member and having a rotary movement relative thereto, a stationary individual internal gear for each of said traveling gears disposed within the U-shaped portion of said crank shaft, counterweights secured to said crank shaft on the opposite side from said 'central portion on the outside of said stationary internal gears, and a piston rod rig- Sonora C. KEMON,

PERRY B. TURPIN.

centric with respect thereto, said circular 6. In a mechanical movement, a crank gear for each -.of said traveling gears dis '7. In a mechanical movement, a crank. shaft having a U-shaped central portion, a 

